Pileus Git - ~andy/gtk/blob - modules/other/gail/gailfactory.h

   1 /* GAIL - The GNOME Accessibility Implementation Library
   2  * Copyright 2002 Sun Microsystems Inc.
   3  * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
   4  * Copyright (C) 2007 Christian Persch
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef _GAIL_FACTORY_H__
  23 #define _GAIL_FACTORY_H__
  24
  25 #include <glib-object.h>
  26 #include <atk/atk.h>
  27
  28 #define _GAIL_IMPLEMENT_FACTORY_CREATE_ACCESSIBLE(GAIL_TYPE, TYPE) \
  29 { \
  30   AtkObject *accessible; \
  31 \
  32   g_return_val_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (object, TYPE), NULL); \
  33 \
  34   accessible = g_object_new (GAIL_TYPE, NULL); \
  35   atk_object_initialize (accessible, object); \
  36 \
  37   return accessible; \
  38 }
  39
  40 #define _GAIL_IMPLEMENT_FACTORY_BEGIN(GAIL_TYPE, TypeName, type_name) \
  41 \
  42 static GType \
  43 type_name##_factory_get_accessible_type (void) \
  44 { \
  45   return GAIL_TYPE; \
  46 } \
  47 \
  48 static AtkObject* \
  49 type_name##_factory_create_accessible (GObject *object) \
  50 {
  51
  52 #define _GAIL_IMPLEMENT_FACTORY_END(GAIL_TYPE, TypeName, type_name) \
  53 } \
  54 \
  55 static void \
  56 type_name##_factory_class_init (AtkObjectFactoryClass *klass) \
  57 { \
  58   klass->create_accessible   = type_name ## _factory_create_accessible; \
  59   klass->get_accessible_type = type_name ## _factory_get_accessible_type;\
  60 } \
  61 \
  62 GType \
  63 type_name##_factory_get_type (void) \
  64 { \
  65   static volatile gsize g_define_type_id__volatile = 0; \
  66   if (g_once_init_enter (&g_define_type_id__volatile)) \
  67     { \
  68       GType g_define_type_id = \
  69         g_type_register_static_simple (ATK_TYPE_OBJECT_FACTORY, \
  70                                        g_intern_static_string (#TypeName "Factory"), \
  71                                        sizeof (AtkObjectFactoryClass), \
  72                                        (GClassInitFunc) type_name##_factory_class_init, \
  73                                        sizeof (AtkObjectFactory), \
  74                                        (GInstanceInitFunc) NULL, \
  75                                        (GTypeFlags) 0); \
  76       g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); \
  77     } \
  78   return g_define_type_id__volatile; \
  79 }
  80
  81 /* Implements a AtkObjectFactory creating accessibles of type
  82  * @GAIL_TYPE for objects of type @TYPE.
  83  */
  84 #define GAIL_IMPLEMENT_FACTORY(GAIL_TYPE, TypeName, type_name, TYPE) \
  85 _GAIL_IMPLEMENT_FACTORY_BEGIN (GAIL_TYPE, TypeName, type_name) \
  86 _GAIL_IMPLEMENT_FACTORY_CREATE_ACCESSIBLE (GAIL_TYPE, TYPE) \
  87 _GAIL_IMPLEMENT_FACTORY_END (GAIL_TYPE, TypeName, type_name)
  88
  89 /* Implements a AtkObjectFactory creating accessibles of type
  90  * @GAIL_TYPE with creation func @create_accessible.
  91  */
  92 #define GAIL_IMPLEMENT_FACTORY_WITH_FUNC(GAIL_TYPE, TypeName, type_name, create_accessible) \
  93 _GAIL_IMPLEMENT_FACTORY_BEGIN (GAIL_TYPE, TypeName, type_name) \
  94 { return create_accessible (GTK_WIDGET (object)); } \
  95 _GAIL_IMPLEMENT_FACTORY_END (GAIL_TYPE, TypeName, type_name)
  96
  97 #define GAIL_IMPLEMENT_FACTORY_WITH_FUNC_DUMMY(GAIL_TYPE, TypeName, type_name, TYPE, create_accessible) \
  98 _GAIL_IMPLEMENT_FACTORY_BEGIN (GAIL_TYPE, TypeName, type_name) \
  99 { \
 100   g_return_val_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (object, TYPE), NULL);\
 101   return create_accessible (); \
 102 } \
 103 _GAIL_IMPLEMENT_FACTORY_END (GAIL_TYPE, TypeName, type_name)
 104
 105 #define GAIL_WIDGET_SET_FACTORY(widget_type, type_as_function)                  \
 106         atk_registry_set_factory_type (atk_get_default_registry (),             \
 107                                        widget_type,                             \
 108                                        type_as_function ## _factory_get_type ())
 109
 110 #endif /* _GAIL_FACTORY_H__ */